Re: Convert EO Model from Oracle to Derby at runtime
Re: Convert EO Model from Oracle to Derby at runtime
- Subject: Re: Convert EO Model from Oracle to Derby at runtime
- From: JR Ruggentaler <email@hidden>
- Date: Wed, 9 Jul 2008 14:32:30 -0500
No, no prototypes are used. All the entities are EOGenericRecords and
are modified quarterly+. We are trying speed access to this data but
we don't want to cache these entities due to the amount of data.
On Jul 9, 2008, at 2:24 PM, Chuck Hill wrote:
Are you using prototypes in your model?
On Jul 9, 2008, at 12:17 PM, JR Ruggentaler wrote:
I have a EO model that I want to move some entities at runtime from
an Oracle database to a local Derby database. I created a new model
at run time and added the entities to the new model and removed the
same entities from the other model. Then I tried using:
EOSchemaGeneration
.createTableStatementsForEntityGroup(localModel.entities());
to generate the Derby create statements but that fails at:
EOSQLExpression.columnTypeStringForAttribute();
the external types from the Oracle model are different from Derby.
For example Derby doesn't recognize NUMBER and VARCHAR2. Is there
some way to convert a model written for one RDBMS (Oracle) to
another RDBMS (Derby)? I can manually iterate the attributes and
change the attribute external type (EOAttribute.setExternalType())
but I am hoping EOF or some one on this list has a more elegant way
of switching RDBMS on the fly in code.
P.S. I am using WO 5.4
JR
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